The synthesized melanin in these sunglasses compensates for aging eyes' heightened sensitivity to glare and decreased visual acuity by filtering out damaging ultraviolet and high-energy visible light. By age 65, eyes lose about 50% of their reserves of melanin, the pigment that gives eyes their color, protects from UV damage, and reduces glare naturally. The lenses in these glasses are infused with melanin to offset this loss, which helps decrease eye fatigue and enhance contrast, allowing you to see details with sharper clarity and colors more accurately. The lenses are also polarized for maximum glare protection. The shatter resistant lenses are treated with a flash mirror coating for long life, and the lightweight elastic titanium frame is corrosion resistant and has memory-ability to recover its shape when bent. Micro fiber carrying pouch included. 6" L x 6" W x 1 1/2" H. (2 1/2 oz.)

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The Eye Fatigue Preventing Sunglasses come with The Hammacher Schlemmer Lifetime Guarantee at no additional charge. If this product ever disappoints you, for any reason, you may return your Hammacher Schlemmer purchase for exchange, credit, or refund.

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I've has some H.S. reading glasses with melanin for several years now, and they are wonderful! [By FAR the best reading glasses I have ever had -- or even seen.] I ordered these sunglasses, also with melanin, largely due to this very favorable experience, and so far [est. one week] they are of similar quality.